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Finding the Fourth Proportional to 2,140.06, 3,208.92 and 1,154.06

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Solution

The fourth proportional to 2,140.06, 3,208.92 and 1,154.06 is: 1,730.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140.06 : 3,208.92 = 1,154.06 : x
  2. Step 2: Convert to fraction form
    2,140.06/3,208.92 = 1,154.06/x
  3. Step 3: Cross multiply
    2,140.06x = 3,208.92 × 1,154.06
  4. Step 4: Simplify right side
    2,140.06x = 3,703,286.22
  5. Step 5: Solve for x
    x = 3,703,286.22/2,140.06
  6. Step 6: Final answer
    x = 1,730.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.